安井武史先生、原口雅宣先生、藤方潤一先生、久世直也先生、岸川博紀先生、時実悠先生、長谷栄治先生らの論文「All-photonic W-band terahertz receiver based on THz-to-optical carrier conversion with soliton microcomb dual carriers for high-speed OOK wireless transmission」が掲載されました。

 

掲載誌等：Optics Express, 34, 2, 3355-3370, 2026.
DOI：10.1364/OE.582936
著者：Yudai Matsumura, Hiroki Kishikawa, Naoya Kuse, Yasuhiro Okamura, Eiji Hase, Junichi Fujikata, Masanobu Haraguchi, Takahiro Kaji, Akira Otomo, Isao Morohashi, Tomohiro Tetsumoto, Shintaro Hisatake, Atsushi Kanno, Yu Tokizane and Takeshi Yasui

 

要約：We demonstrate an all-photonic terahertz (THz) receiver for a data-modulated signal, targeting a 106-GHz, 2.97-Gb/s on-off keying (OOK) link. The scheme employs dual-wavelength optical carriers referenced to a soliton microcomb and performs THz-to-optical carrier conversion via nonpolarimetric electro-optic downconversion using an electro-optic polymer modulator. RF spectra and eye diagrams confirmed error-free transmission with a Q-factor of 5.78 and a bit-error rate of 3.74 × 10-9, well below the hard-decision forward-error-correction threshold (Q-factor = 2.67, (BER) = 3.8 × 10-3). Comparative measurements using a single-wavelength optical-carrier configuration clearly revealed the superior signal-to-noise performance of the dual-wavelength scheme. System-level modeling further indicated the scalability of the transmission distance beyond 100 m. These results establish soliton microcomb-referenced dual carriers as a promising platform for compact, integrated receivers enabling seamless wireless-optical convergence in future 6G networks.